GB1559268A - Glass aerosol containers and method of making them - Google Patents

Glass aerosol containers and method of making them Download PDF

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Publication number
GB1559268A
GB1559268A GB6053/78A GB605378A GB1559268A GB 1559268 A GB1559268 A GB 1559268A GB 6053/78 A GB6053/78 A GB 6053/78A GB 605378 A GB605378 A GB 605378A GB 1559268 A GB1559268 A GB 1559268A
Authority
GB
United Kingdom
Prior art keywords
rubber
rim
glass bottle
coating
bottle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB6053/78A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TREU AG VAN
Original Assignee
TREU AG VAN
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by TREU AG VAN filed Critical TREU AG VAN
Publication of GB1559268A publication Critical patent/GB1559268A/en
Expired legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D83/00Containers or packages with special means for dispensing contents
    • B65D83/14Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant
    • B65D83/38Details of the container body

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)

Abstract

The glass bottle (1) has at its mouth (3) a bead-shaped enlarged edge (4). A valve can be mounted thereon in order thus to form a pressure container for an aerosol. The bead edge (4) has a strongly adhering coating (5) made of a deformable material. Preferably it consists of rubber. By this measure, a surprisingly good sealing of the pressure container is obtained. In addition, a process for producing a bottle of this kind is given, the special feature of which consists in the fact that the edge (4) of the glass bottle (1) is first cleaned using an open flame, then a rubber or rubber-containing substance containing both plasticiser and vulcanising agents is injection moulded onto the edge (4) and subsequently the glass bottle (1) is heated by means of radiant heat. A coating produced by this process is particularly durable and effective. <IMAGE>

Description

(54) IMPROVEMENTS IN OR RELATING TO GLASS AEROSOL CONTAINERS AND METHODS OF MAKING THEM (71) We, VON TREU AG, a Swiss Body Corporate, of 79 Chamer Strasse, 6300 Zug 3, Switzerland, do hereby declare the invention, for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement: The present invention relates to aerosol containers of the kind comprising a glass bottle having a rim at its mouth which is widened to form a bead and a metal closure cap which has a seal and a valve and is locatable over the rim and firmly pressed thereagainst. The invention also relates to a method of producing such a container.
Containers of the kind described are used to hold many aerosols. Thus, they are used for, interalia, perfume sprays, pharmaceutical sprays and food sprays or the like.
Container of this kind are valued not least because they are neutral to the taste and physiologically unabjectionable and are easy to check. They do however present a problem in that they are difficult to seal satisfactorily.
Thus, it is not infrequent that filled contaipers ready for use are found to have lost weight after being stored for only a few months. These losses can even be detected visually. This is quite a serious problem, particularly with containers of small volume.
The closure caps of containers of this nature have a seal, generally in the form of an inserted sealing ring made of butadiene polymer or copolymer or the like as dictated by the compatibility of the active substance contained in the enclosure, or, and this is only used with caps of tin plate and is fairlv uncommon, in the form of an injected seal ing substance. However, It has been found in practice that these measures on their own are not enough. Thus. the rim of a glass bottle rarely forms a flat end-face and also does not generally have a smooth surface and in fact roughnesses, burrs, pores and the like resulting from manufacture can be seen, particularly under the microscope. To enable these to be effectively evened out or sealed, the cap would have to be pressed comparatively hard against the rim.However, a high pressure has an unfavourable effect on the durability of the seal and the glass bottle. In addition, the irregularities in some cases extend beyond the area covered by the seal, so that even an increase in pressure is of no- help.
Since on the one hand aerosol containers of small volume have become increasingly important for commercial reasons and since on the other hand the containers have to be filled many months before they are actually made available to customers so that sudden demands can be satisfied at particular times, complaints from customers regarding the losses of-weight which are found are fairly frequent. In addition, only properly sealed enclosures should be allowed onto the market to ensure safety in use.
It- is an object of the invention to provide an aerosol container of the kind hereinabove described which can be more satisfactorily and durably sealed.
Accordingly, the invention consists in an aerosol container of the kind comprising a glass bottle having a rim at its mouth which is widened to form a bead and a metal closure cap which has a valve and a seal and which is locatable over the rim and firmly pressed thereagainst, wherein the rim of the glass bottle has a firmly adhering coating of a deformable material.
The material of the coating may be both elastically and plastically deformable. A container according to the invention can be assembled and closed in the same manner as known containers,-but in contradistinction thereto however, when this is done a seal can be achieved only in one plane as it were but also around the whole rim. As a result even glass bottles which havs slightly irregular or even porous rims can be effectively sealed. The coating is not intended to come into contact with the active substances contained in the enclosure and such contact is virtually impossible since the inside face of the neck of the bottle in particular remains uncovered as before.
The coating advantageously consists wholly or in part of rubber, i.e. it consists of rubber or a rubber-containing material.
Before it is used, softeners or solvents are added to this material to make it fluid, which softener or solvents evaporate after application or else their effect is gradually cancelled out by vulcanising agents which are also added before application.
The invention also consists in a method of producing the container referred to, wherein the rim of the glass bottle is first burnt off with a naked flame, whereafter rubber or a rubber-containing material, which contains both softeners and vulcanising agents, is sprayed onto the rim, and the glass bottle is then heated by radiant heat.
This radiant heating is carried out in such a way that initially the material flows evenly to form a continuous coating, and can fill up outwardly open pores or the like and even out surface roughness, but then sets.
The burning off is intended to remove surface contamination and to prepare a more secure base for the subsequent coating to adhere to. At the same time the rim is pre-heated, the temperatures reached being approximately 100" Celsius. The rubber or rubber-containing material is easily able to spread over a rim which has been preheated in this way. When this is done the mouth of the glass bottle is held closed to a sufficient degree to prevent any material from finding its way onto the inside face of the neck of the bottle. In. addition, the amount and consistency of the material are so adjusted that it can spread out into a continuous coating in the region of the rim.
The spreading out and flowing by virtue of which the pores are filled up and surface roughness evened out, is primarily promoted by the subsequent additional radiant heating. As the heating continues however, the effect of the usual vulcanising agents contained in the rubber or rubber-containing material becomes stronger and the material thus sets gradually. In the course of the heating, the glass bottle reaches temperatures of 500 Celsius and above. It is ad vantaeeous for the heating to take place in a tunnel oven.
Advantageously, the rubber or rubbercontaining material is sprayed on from a plurality of points regularly distributed about the rim.
After the heating it is useful for the glass bottle to be cooled down more quickly in staPes in a stream of air.
Tn order that the invention may be more -clearly understood, reference will now be made to the accompanying drawings which show a preferred embodiment, by way of example and in which: Fig. 1 is a cross-sectional view of the glass bottle whose rim is coated according to the invention, Fig. 2 is a plan view of the bottle of Fig.
1, and Fig. - 3 is a side-view of a container filled and ready for use.
Referring to the drawings, as shown in Figs. 1 and 2, a glass bottle 1 has a neck 2 having a mouth 3 and a rim 4 which is widened to form a bead. The rim 4 is provided with a continuous coating 5 of rubber or a material containing rubber, which simultaneously fills up pores and evens out surface roughness and which adheres firmly.
The coating 5 starts at the neck 2 of the botde and extends to a point close to the mouth 3. The inside face of the neck 2 is free from any coating however.
As can be seen in Fig. 3, when the container is filled and ready for use, a metal closure cap 6 has been placed over the rim 4 of the bottle 1 and pressed firmly against it by having its edges turned over.
Also, between the closure cap 6 and the rim 4 is arranged an annular seat 7 which has an extension proiecting into the neck 2 of the bottle. The seal 7 consists of polychlorobutadiene (polychlownrene) and is placed loose in the cap 6 before the cap is put on. Also inserted in the can 6 is a valve 8 having a riser tube 9. The salve 8 carries an atomising head 10 which also forms an actuator for the valve.
WHAT WE CLAIM IS:- 1. An aerosol container of the kind comprising a glass bottle having a rim at its mouth which is widened to form a bead and a metal closure cap which has a valve and a seal and which is locatable over the rim and firmly pressed thereagainst, wherein the rim of the glass bottle has a firmly adhering coating of a deformable material.
2. A container as claimed in claim 1 wherein the coating consists of an elastically and plastically deformable material.
3. A container as claimed in claim 1 or 2, wherein the coating consists wholly or in part of rubber.
4. A method of producing an aerosol container of the kind set forth in claim 1, 2 or 3. wherein the rim of the glass bottle is first burnt off with a naked flame, whereafter rubber or a rubber-containing material, which contains both softeners and vulcanising agents. is sprayed onto the rim, and the glass bottle is then heated by radiant heat.
5. A method according to claim 4, wherein the rubber or rubber-containiw material is spraved on from a pluralitv of points regularly distributed about the rim.
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (8)

**WARNING** start of CLMS field may overlap end of DESC **. contact is virtually impossible since the inside face of the neck of the bottle in particular remains uncovered as before. The coating advantageously consists wholly or in part of rubber, i.e. it consists of rubber or a rubber-containing material. Before it is used, softeners or solvents are added to this material to make it fluid, which softener or solvents evaporate after application or else their effect is gradually cancelled out by vulcanising agents which are also added before application. The invention also consists in a method of producing the container referred to, wherein the rim of the glass bottle is first burnt off with a naked flame, whereafter rubber or a rubber-containing material, which contains both softeners and vulcanising agents, is sprayed onto the rim, and the glass bottle is then heated by radiant heat. This radiant heating is carried out in such a way that initially the material flows evenly to form a continuous coating, and can fill up outwardly open pores or the like and even out surface roughness, but then sets. The burning off is intended to remove surface contamination and to prepare a more secure base for the subsequent coating to adhere to. At the same time the rim is pre-heated, the temperatures reached being approximately 100" Celsius. The rubber or rubber-containing material is easily able to spread over a rim which has been preheated in this way. When this is done the mouth of the glass bottle is held closed to a sufficient degree to prevent any material from finding its way onto the inside face of the neck of the bottle. In. addition, the amount and consistency of the material are so adjusted that it can spread out into a continuous coating in the region of the rim. The spreading out and flowing by virtue of which the pores are filled up and surface roughness evened out, is primarily promoted by the subsequent additional radiant heating. As the heating continues however, the effect of the usual vulcanising agents contained in the rubber or rubber-containing material becomes stronger and the material thus sets gradually. In the course of the heating, the glass bottle reaches temperatures of 500 Celsius and above. It is ad vantaeeous for the heating to take place in a tunnel oven. Advantageously, the rubber or rubbercontaining material is sprayed on from a plurality of points regularly distributed about the rim. After the heating it is useful for the glass bottle to be cooled down more quickly in staPes in a stream of air. Tn order that the invention may be more -clearly understood, reference will now be made to the accompanying drawings which show a preferred embodiment, by way of example and in which: Fig. 1 is a cross-sectional view of the glass bottle whose rim is coated according to the invention, Fig. 2 is a plan view of the bottle of Fig.
1, and Fig. - 3 is a side-view of a container filled and ready for use.
Referring to the drawings, as shown in Figs. 1 and 2, a glass bottle 1 has a neck 2 having a mouth 3 and a rim 4 which is widened to form a bead. The rim 4 is provided with a continuous coating 5 of rubber or a material containing rubber, which simultaneously fills up pores and evens out surface roughness and which adheres firmly.
The coating 5 starts at the neck 2 of the botde and extends to a point close to the mouth 3. The inside face of the neck 2 is free from any coating however.
As can be seen in Fig. 3, when the container is filled and ready for use, a metal closure cap 6 has been placed over the rim 4 of the bottle 1 and pressed firmly against it by having its edges turned over.
Also, between the closure cap 6 and the rim 4 is arranged an annular seat 7 which has an extension proiecting into the neck 2 of the bottle. The seal 7 consists of polychlorobutadiene (polychlownrene) and is placed loose in the cap 6 before the cap is put on. Also inserted in the can 6 is a valve 8 having a riser tube 9. The salve 8 carries an atomising head 10 which also forms an actuator for the valve.
WHAT WE CLAIM IS:- 1. An aerosol container of the kind comprising a glass bottle having a rim at its mouth which is widened to form a bead and a metal closure cap which has a valve and a seal and which is locatable over the rim and firmly pressed thereagainst, wherein the rim of the glass bottle has a firmly adhering coating of a deformable material.
2. A container as claimed in claim 1 wherein the coating consists of an elastically and plastically deformable material.
3. A container as claimed in claim 1 or 2, wherein the coating consists wholly or in part of rubber.
4. A method of producing an aerosol container of the kind set forth in claim 1, 2 or 3. wherein the rim of the glass bottle is first burnt off with a naked flame, whereafter rubber or a rubber-containing material, which contains both softeners and vulcanising agents. is sprayed onto the rim, and the glass bottle is then heated by radiant heat.
5. A method according to claim 4, wherein the rubber or rubber-containiw material is spraved on from a pluralitv of points regularly distributed about the rim.
6. A method according to claim 4 or
5, wherein after the heating the glass bottle is cooled down more quickly in stages in a stream of air.
7. An aerosol container substantially as hereinbefore described with reference to the accompanying drawings.
8. A method of producing an aerosol container substantially as hereinbefore described with reference to the accompanying drawings.
GB6053/78A 1977-02-16 1978-02-15 Glass aerosol containers and method of making them Expired GB1559268A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2706500A DE2706500C3 (en) 1977-02-16 1977-02-16 Method of making a tight seal for a container for pressurized liquid

Publications (1)

Publication Number Publication Date
GB1559268A true GB1559268A (en) 1980-01-16

Family

ID=6001319

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6053/78A Expired GB1559268A (en) 1977-02-16 1978-02-15 Glass aerosol containers and method of making them

Country Status (9)

Country Link
AT (1) AT366345B (en)
BE (1) BE863959A (en)
CH (1) CH622476A5 (en)
DE (1) DE2706500C3 (en)
FR (1) FR2380961A1 (en)
GB (1) GB1559268A (en)
IT (2) IT7864218V0 (en)
LU (1) LU79068A1 (en)
NL (1) NL7801680A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3625962A1 (en) * 1986-07-31 1988-02-11 Cebal Verpackungen Flow-moulded, seamless container

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103755150A (en) * 2013-12-28 2014-04-30 黄建新 Aerosol can

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE556964C (en) * 1928-12-21 1932-08-17 Dewey And Almy Chemical Compan Sealing compound for container closures
GB738313A (en) * 1952-02-08 1955-10-12 Dunlop Rubber Co Method of bonding rubber to metal, glass or other materials
US2788925A (en) * 1954-08-16 1957-04-16 Lawrence T Ward Metering valve
DE1163731B (en) * 1960-08-08 1964-02-20 Leybold Hochvakuum Anlagen Filling container that can be shut off vacuum-tight
US3189207A (en) * 1963-02-15 1965-06-15 Owens Illinois Glass Co Aerosol-type package
US3344093A (en) * 1963-10-29 1967-09-26 Rosen And Strickman Resinous composition and methods of making and foaming the same
GB1206751A (en) * 1966-10-14 1970-09-30 Bitumen Ind Ind Ltd Improvements in or relating to sealing double glazing units
GB1207483A (en) * 1966-10-19 1970-10-07 Draftex Ltd Improvements in or relating to the mounting of windscreens or windows in support structures
DE1988501U (en) * 1967-11-09 1968-06-27 Karl J W Stroeder Nachfolger K STONE MUG WITH THREAD FOR SCREW CAP.
FR2085227B1 (en) * 1970-02-26 1974-08-09 Labaz

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3625962A1 (en) * 1986-07-31 1988-02-11 Cebal Verpackungen Flow-moulded, seamless container

Also Published As

Publication number Publication date
BE863959A (en) 1978-05-29
IT1110598B (en) 1985-12-23
CH622476A5 (en) 1981-04-15
FR2380961B3 (en) 1980-10-10
DE2706500B2 (en) 1980-12-18
DE2706500A1 (en) 1978-08-17
DE2706500C3 (en) 1981-07-30
LU79068A1 (en) 1978-06-27
AT366345B (en) 1982-04-13
IT7864218V0 (en) 1978-02-16
FR2380961A1 (en) 1978-09-15
IT7885519A0 (en) 1978-02-16
NL7801680A (en) 1978-08-18
ATA98178A (en) 1981-08-15

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee